次世代AI基盤に求められるデータ利活用基盤の実現方法について

データは溜まる一方で放っておけば未整理のまま、コピーや世代が増え離れた拠点に散乱し、運用・維持コストが増大していってしまいます。いざAI学習においてデータを使おうとするとすぐに利用できなかったり、利用できても処理に膨大な時間がかかったりします。このような現場の課題を解決するにはどのような機能が必要でしょうか。実際の事例を交え、既存環境を大きく変えずにAIに最適なデータ利活用基盤を実現した賢い手法について具体的にご説明します。

Fast magnetization dynamics and lattice distortion for L10-FePt nano-granular thin films at elevated temperatures

Understanding the material parameters at high temperature is essential for HAMR media design. Interlayer diffusion, oxidization, thermal expansion and lattice distortion are possible factors that may affect the material parameters and magnetization dynamics at high temperatures in thin film samples.In order to discuss these temperature dependence of the material parameters, systematic measurements are necessary. In this study, we have performed XRD and FMR measurements at elevated temperatures for L10-FePt continuous and nano-granular thin films.Temperature dependence of lattice distortion, magnetic anisotropy and damping constant will be discussed.

HAMR HDD用レーザ

HDD業界に携わる皆さまは、あまりレーザについて馴染みが無いとお聞きしています。 そこで、まず初めに、ソニーのレーザ事業の歴史と、現在の事業内容や組織体制とともに、レーザの基本的な動作原理のほかHAMR HDD用レーザビジネスの特徴について簡単にご紹介させていただきます。

HAMR HDD用サスペンション

HDDサスペンションは低剛性なバネであり、磁気ヘッド位置決め特性を劣化させる要因となると同時に、最新のサスペンションは2個のアクチュエーターを内蔵しVCMと共にTriple stage actuator(TSA)として磁気ヘッド位置決めを担う部品である。 今後のハードディスクドライブ大容量化の最も重要な技術の一つはHAMRであり、記録密度向上は主にTPIの改善で進んでいくため磁気ヘッドの位置決めは更に重要になると考えられる。そこでHAMR用サスペンションと今後の高TPIに要求される特性と改善点をご紹介する。

閉会挨拶

懇親会

The Revolution of Tape

Since 1952, the evolution of tape storage has been well documented and is perceived as relatively predictable well into the future. But what if tape is actually on the verge of a revolution, thanks to AI and a popular enabler, S3. If so, it will take more than AI and S3 to bring on the Tape Revolution. Advancement in tape automation, originally designed for hyperscalers, is proving attractive to traditional tape lovers and ex-lovers alike. Learn how IBM is removing customer pain points while improving data rate and density in order to expand and re-launch tape into data centers around the world.

Data Storage Market Picks up Momentum

Long-anticipated improvements starting with hyperscale growth for nearline HDDs. After several quarters of of confusing and conflicting demand for data storage, the industry has reached a low point and has now bounced off that. Of course, demand patterns are unusual and non-linear, but the cloud is leading the storage industry back to growth and profitability. But how long will it last?

Understanding the Present and Potential of Area Density Capability for HAMR

In conventional perpendicular magnetic recording, magnetic grains of medium only have two saturated magnetization states along its magnetic easy axis. The resulting binary noise at recorded transitions yields the medium SNR to linearly depending on the number of grains across the data track width. In HAMR, this understanding is altered. The FePt-L10 grains can have domains trapped inside during a recording process, yields grains at transition centers to have zero or close-to-zero magnetic moments. The fractionally magnetized grains significantly reduce the binary noise, effectively enhancing the number of the grains across a recording track. This mechanism is responsible for the relatively high track density achieved today in HAMR.
Recent thermal erasure noise experimental measurements have confirmed the predicted existence of zero moment grains in current FePt-L10 HAMR media as well as the corresponding reduction of medium noise power. The zero moment state of the grains potentially gives rise to one additional state to the other two saturated state. This give rise to a possibility of 3-level recording in which the area recording density can be increased by 50% without any reduction of either track width or bit length. The talk will focus on the challenges in recording processes and potential schemes needed to enable the 3-level recording.

大容量化がすすむHDD技術

データ駆動型社会の要求に応えるべくハードディスクドライブ(HDD)はこれまで継続的な容量拡大を実現しており、将来に渡ってもこの容量拡大を継続することが期待されている。 本講演では既に実現しつつある20〜30TBのHDD技術から、30〜40TB、50TB超に向けたSMR、MAMR、HAMR、多数枚実装等、種々の技術アプローチと東芝HDD製品の大容量化に向けた取組について紹介する。

Hard Disk Drive Innovations in The Era of Cloud Storage

In the last two decades, cloud centers have revolutionized our data storage methods, significantly accelerating data growth and ushering us into the zettabyte era. This revolution has also spurred new opportunities for HDD innovations to address the vast demand for cloud data storage.
With a focus on adapting to this cloud transformation, our industry has advanced innovative solutions specifically optimized to meet cloud storage needs. These include the development of Helium-filled drives, Ultra-Shingled Magnetic Recording (Ultra-SMR), and an advanced mechanical platform capable of scaling up to 1MTPI. These innovations are not merely incremental improvements; they represent significant shifts within the HDD industry, establishing new benchmarks in data storage capabilities.
As the pace of recording density increase is challenged by the thermal stability trilemma, these innovations have emerged as pivotal enablers in the lead-up to the transition to Heat-Assisted Magnetic Recording (HAMR) technology. They have been crucial for the industry to keep pace with the rapidly expanding storage requirements of the cloud.
With the introduction of these technologies and the onset of HAMR, our industry's technology roadmap has been significantly enhanced, positioning us to effectively accommodate the expected surge in cloud data volume, which is anticipated to be further accelerated by advancements in Artificial Intelligence.

次世代磁気記録メディアの開発方針

世の中のデータストレージのニーズはより強くなっていっており、この要求を満たすべくハードディスクの大容量化が求められている。 そのためには記録密度の持続的な向上が必要不可欠であり、達成するためには磁気記録メディアの微細構造の設計が非常に重要となる。 本講演では次世代メディア開発の進展や課題、今後の展望について紹介する。

閉会挨拶

懇親会